Question 1 - Please explain in steps if possible
A bicycle wheel is 30 inches in diameter.
a. To the nearest revolution, how many times will the wheel turn if the bicycle is ridden for 3 miles?
b. Suppose the wheel turns at a constant rate of 2.75 revolutions per second. What is the linear speed in miles per hour of a point on the tire?
Question 2
Low Earth orbiting (LEO) satellites orbit between 200 and 500 miles above Earth. In order to keep the satellites at a constant distance from Earth, they must maintain a speed of 17,000 miles per hour. Assume Earth's radius is 3960 miles.
a. Find the angular velocity needed to maintain a LEO satellite at 200 miles above Earth.
b. How far above Earth is a LEO with angular velocity of 4 radians per hour?
c. Describe the angular velocity of any LEO satellite.
2007-11-06
09:20:06
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1 answers
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asked by
Anonymous
in
Physics